Joseph sachs



.(No Model.)

J. SACHS.

AUXILIARYFIRE ALARM TELEG AP SYSTEM. 7 N0. 515,50a.- Patented Feb. 27, 1394.

lNVENTOl? 4524 ATTORNEYS.

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. UNITE STATES PATENT OFFICE.

JOSEPH SACHS, OF NEW YORK, N. Y.

AUXILIARY Fl RE-ALARM-TELEGRAPH SYSTEM.

SPEOIFIGATION forming part of Letters Patent No. 515,503, dated February 27, 1894.

Application filed February 15,1893- Serial No. 462,403- (No model.)

To aZZ whom it may concern.-

Be it known that I, JOSEPH SACHS, residing in the city of New York, county and State of New York, have invented an Improved Auxiliary Fire-Alarm-Telegraph System, of which the following is a specification.

The present invention relates to auxiliary fire alarm telegraph systems, that is, systems in which one or more fire alarm or similar boxes can be operated from distant points by means of one or more local circuits known as auxiliary circuits. Heretofore the auxiliary circuits have led directly to one of the street boxes of the fire alarm circuit; said box containing electric devices whereby the street box could be caused to send in a signal in the same manner as though it were pulled by hand. One such system is described in my Patent No. 481,590, dated August 30, 1892. According to the present invention the auxiliary circuit does not lead directly to a street box of the tire alarm system, but to an auxiliary street box connected in the same fire telegraph or main circuit as the street box, and adapted to send a corresponding signal.

In the drawing the figure is a front view of street and auxiliary fire alarm boxes, the door of the latter being removed, and onlya part of the mechanism of the street box being shown.

A is a street signal box; B an auxiliary street box.

C is a fire alarm circuit; and D is an auxiliary circuit.

In the street box 1 indicates a circuit making and breaking or circuit changing wheel, on which bears a spring 2, on the insulating block 3, the spring being connected to wire a and the wheel being connected to wire 5.

6 is a weight suitably connected to the clock-work mechanism for rotating wheel 1 in the ordinary manner. Below the weight is a pivoted arm 7, under which is a spring 8,

tending to raise said arm, and also acontact spring 9, connected to wire 10; arm 7 is connected to wire 11 through spring 8.

I prefer to support the auxiliary street box directly above the described street boxes, for example, by means of ascrew-thread'ed connection 12, through which wires may passbut this is not essential.

Within the auxiliary box is a circuit making and breaking or changing signal wheel 13, driven by a suitable clock-work motor-,iu the usual manner, and having preferably the same number and arrangement of teeth as the circuit wheel in the street box; but the propelling motor or clock-work is, or maybe, so regulatedthat makes and breaks will either be a; little slower or a little more rapid than those of thestreet box, so that the attendant at. the the alarm station will know whether a street box or an auxiliary box is sending in an alarm.

On the periphery of the circuit wheel 13 hears a contact spring 14, connected by wire 15 to one wire of the fire alarm circuit O. Y

16 is a magnet, one terminal of which is connected to the auxiliary circuit by wire 17, and the other terminal of which is connected by wire 18 to the circuit breaker 19, thence by wire 20 to wire 11. The armature lever 21 of this magnet is pivoted at 22, and has an adj ustable screw or stop 23 for the regulating fan or' suit-able escapement 24 of the clock-work or motor.

At the end of the armature lever is a book 25, which normally rests behind the beveled head 26 of the lever 27, pivoted at 28, and. havinga spring 29 tending to move the upper end of the lever toward the left. The upper portion of the lever 27 is insulated from the lower portion as indicated at 30. At the lower end of the lever 27, is a contact spring '31,'which'normally stands near to but out of contact with a wheel 32, which is driven by the same motor that drives the circuit wheel 13, andwhich has at one point in its periphery a notch 33. The spring 31 is connected to wire 5, as shown.

I have not herein shown any particular arrangement of the auxiliary circuit outside of the signal boxes. This circuit may have auxiliarysending boxes with circuit closers and return calls, as shown in my patent above referred to, or it may have other devices for accomplishing the same object, as in my wellknown multiple arc auxiliary system. The circuit may also be provided with suitable testing devices. Suppose current to be sent over the auxiliary circuit by operation of any suitable circuit controller or sending box, the actuating magnet 16 is thereby energized, pulling down its armature, releasing the fly 24, starting the circuit wheel 13, ancLreleas: ing lever 27, allowing it to move toward the left, bringing spring 31 against the wheel 32, but not disconnecting springs 19. This closes a short circuit around the contact spring 2 and circuit Wheel of the n ain or street; signal box, as follows: from wire 5 to spring 31, to wheel 32, to theframe ofthe clock-work, to wire 4- It is evident, therefore, that if the street box is operated by hand after the auxiliary box has been released by the auxiliary circuit the street box will have no effect on the fire alarm circuit becauseof said short cir; cuit. Interferenceis therefore prevented. As the arm 27 movestoward the leftthe circuit through wires 18 and 20 will be interrupted. This is fOI'ille purpose of operating a return call (not shown) in the auxiliary circuit. When the circuit wheel 13 has made the required number of turns the notch 33 comes under spring 31, allowing lever 27 to, move far enough to disconnect springs 19, coming to rest against stop 3 and spring 31, remaining out of contact with the wheel 32,.thus opening the shunt varound the street box. The breaking of the auxiliary circuit at 19 sends a returncall, as in my patent referred to, andthe armature lever 21 is returned to its normal position by its retracting spring, a

and this movement returns lever 27 by means of the cam head 26 and hook 25, thereby leavingthe apparatus in condition to use again.

If the street box had been pulled first, so that it was sending in an alarm when the auxiliary circuit wasclosed at a sending box, to operate the auxiliary box, said auxiliary box could not be operated because the auxiliary circuit would be open between the lever 7 and. the spring 9, since the street box is operated by raising weight 6, and then allowing it to descendin the well known manner.

It will be noticed that one of the signal boxes is renderedinoperative, when the other is operated, by beingshortcircuited, and that the other box is renderedinoperative, when j the first mentioned box is operated,.by hay-j ing its circuit opened, but I do not limit my- L self 'to the particular meansfor rendering one box inoperative when the other box is operated; and it is evident that theparticular construction ofthe streetboxes and of the auxiliary boxes is immaterial soJong as they are adapted to operate in substantially the manner abovedescrib'ed, The auxiliary box mayjsend a difierent signal from its streeti box, but it should be such that the firede-f partinent will understand that it designates the same fire district. p

Byem'ploying the auxiliary signal box, sending a signal corresponding to th'e street box, I am able tosend the 'same signal by. means of the auxiliary circuit and box as would be sent by the street box, and the auxiliary system is made indepe ndent of the fire alarm systeimso far as admission to the fire alarm street boxes by persons in charge of the auxiliary system is concerned, after the system is once installed, and this is a great advantage, for many reasons.

I claim-- v 1. The combination with afire alarm orsiin lar signal mechanism. and a .main circuit therefor, said mechanism having means for changing the fire alarmcircuit ina predetermined manner for sending a signal, of an ai xiliary signal mechanism also having means for changing the fire alarm circuit to send a signal, means ,in eac h nechan sn for rendering the other mechanism noperat ve, and an auxiliary or releasing circuitfor said auxiliary box,substant ial ly as described.

2. The combination of a street box hav ng means for sending a signal overthe main circuit, an auxiliary signalbogwitli means for sending a corresponding signal over the same main circuit, an auxiliary orreleasing circuit for the auxiliary box, and means fer rendering one box inoperativeon sa d main circuit when the other box is operating, substantially as described. 7 r y 3. The combination of astreetlooxA having circuit controlling devices for sending a sig' nal, the auxiliary signalbox B, having'similar circuit changing devices, for sending a signal on the same circuit as the street box, a circuit closer 31, 32 in the auxiliary box for short-circuiting the street bOX, a,l1d Et O111- cuit breakerin the streetbox inthe auxiliary circuit,- substantially as described I V 4. The combination of box A, hayi ig suitable signal sending devices, the s gnal box B, having similar signal sending devices, and main and auxiliary circuits both of which enter both of said boxes, substantially as described. I p e 5. The combination of box A, having suitable signal sending devices, the signal box B, adjacent to box A, and joined to it bya tubular connection 12, signal sending devices, and main and auxrliary circuits, both of which enter both of said boxes, substantially as described. g y 6. The combination With a main s gnal mechanism adapted to send a predetermined signal on a mainc'ircuiuof a duplicatesigial niechanism hav ing its .signal wheel connected on th'esame main circuit, anauxiliary circuit to actuate said duplicate mechanism from adi stanca-and means inthe duplicate mechanism forsending a return signal only when it has beenprop e rly actuated the auxiliary circuit, substantially as described.

, JOSEPH SACHS. WVitnesses: a

HARRY M. TURK, CHARLES M. CATLIN.

and having similar IIS 

